[Jeff]

chbkk

I think that your tractor trailer analogy has no relevance with respect to the release swivel action for the following reasons.

1) In your tractor trailer example you are trying to hit the golf ball with the side of the trailer, but there is a flexible joint between the tractor (hosel) and the trailer (clubhead) that allows the angle between the tractor and trailer to vary. By contrast, in a release swivel action, the angle between the hosel and the clubhead is fixed, and not flexible and the clubface angle changes relative to the ball-target line because the entire clubshaft and clubface rotates 90 degrees as a single unit while the left wrist uncocks - and the rpm of the clubshaft hosel is identical to the rpm of the clubface's sweetspot and equal to the rpm of the flat left wrist/hand unit.

2) To think of a comparable analogy, I think that you need to think along the following lines. First eliminate the left wrist uncocking action as a confounding variable by imagining the clubshaft at the delivery position - like in this photo of Aaron Baddeley.



Note that toe of the club is pointing upwards and that the clubhead is fixed at right angles to the clubshaft (and not following in-line behind like the trailer follows the tractor). Note that the clubface is parallel to the back of the left hand. Note that there is a 90 degree angle between the clubshaft and left arm. If Aaron Baddely didn't uncock his left wrist but simply rotated his left hand 90 degrees so that the back of the left hand faced the target at impact - then the clubface would hit a ball squarely if the ball was at the appropriate height above the ground. During that swivel action, the clubface would rotate 90 degrees and the clubshaft/hosel would rotate exactly the same amount - in other words, the flat left wrist/hand unit and clubshaft and clubface would all rotate at the same rpm. The fixed 90 degree angle between the clubshaft and clubhead would remain fixedly unchanged and the toe of the club would still point straight up at impact. There is no rotation of the hosel around the sweetspot (or vica versa) during this 90 degree rotation phenomenon.

Jeff.

p.s. Your tractor-trailer anlogy has relevance when describing the difference between a random release and a late release of the club. The road path and any swerving off that straight road path is equivalent to the hand arc path, and the flexible joint between the tractor and trailer is equivalent to the flexible left wrist joint between the left arm and clubshaft.